/// <summary>申请历史错误或中断的任务</summary>
/// <param name="server">申请任务的服务端</param>
/// <param name="ip">申请任务的IP</param>
/// <param name="pid">申请任务的服务端进程ID</param>
/// <param name="count">要申请的任务个数</param>
/// <returns></returns>
public IList <JobLog> AcquireOld(String server, String ip, Int32 pid, Int32 count)
{
lock (this)
{
using (var ts = Meta.CreateTrans())
{
var list = new List <JobLog>();
// 查找历史错误任务
if (ErrorDelay > 0)
{
var dt = DateTime.Now.AddSeconds(-ErrorDelay);
var list2 = JobLog.Search(ID, dt, MaxRetry, new[] { JobStatus.错误, JobStatus.取消 }, count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
// 查找历史中断任务，持续10分钟仍然未完成
if (MaxTime > 0 && list.Count < count)
{
var dt = DateTime.Now.AddSeconds(-MaxTime);
var list2 = JobLog.Search(ID, dt, MaxRetry, new[] { JobStatus.就绪, JobStatus.抽取中, JobStatus.处理中 }, count - list.Count);
if (list2.Count > 0)
{
list.AddRange(list2);
}
}
if (list.Count > 0)
{
foreach (var ti in list)
{
ti.Server = server;
ti.ProcessID = pid;
ti.Client = $"{ip}@{pid}";
//ti.Status = JobStatus.就绪;
ti.CreateTime = DateTime.Now;
ti.UpdateTime = DateTime.Now;
}
list.Save();
}
ts.Commit();
return(list);
}
}
}
/// <summary>申请任务分片</summary>
/// <param name="topic">主题</param>
/// <param name="server">申请任务的服务端</param>
/// <param name="ip">申请任务的IP</param>
/// <param name="pid">申请任务的服务端进程ID</param>
/// <param name="count">要申请的任务个数</param>
/// <returns></returns>
public IList <JobLog> AcquireMessage(String topic, String server, String ip, Int32 pid, Int32 count)
{
// 消费消息时，保存主题
if (Topic != topic)
{
Topic = topic;
SaveAsync();
}
var list = new List <JobLog>();
if (!Enable)
{
return(list);
}
// 验证消息数
var now = DateTime.Now;
if (MessageCount == 0 && UpdateTime.AddMinutes(2) > now)
{
return(list);
}
lock (this)
{
using (var ts = Meta.CreateTrans())
{
var size = BatchSize;
if (size == 0)
{
size = 1;
}
// 消费消息。请求任务数量=空闲线程*批大小
var msgs = AppMessage.GetTopic(AppID, topic, now, count * size);
if (msgs.Count > 0)
{
for (var i = 0; i < msgs.Count;)
{
var msgList = msgs.Skip(i).Take(size).ToList();
if (msgList.Count == 0)
{
break;
}
i += msgList.Count;
// 创建新的分片
var ti = new JobLog
{
AppID = AppID,
JobID = ID,
Data = msgList.Select(e => e.Data).ToJson(),
MsgCount = msgList.Count,
BatchSize = size,
};
ti.Server = server;
ti.ProcessID = pid;
ti.Client = $"{ip}@{pid}";
ti.Status = JobStatus.就绪;
ti.CreateTime = DateTime.Now;
ti.UpdateTime = DateTime.Now;
ti.Insert();
list.Add(ti);
}
// 批量删除消息
msgs.Delete();
}
// 更新作业下的消息数
MessageCount = AppMessage.FindCountByAppIDAndTopic(AppID, topic);
UpdateTime = now;
Save();
// 消费完成后，更新应用的消息数
if (MessageCount == 0)
{
var app = App;
if (app != null)
{
app.MessageCount = AppMessage.FindCountByAppID(ID);
app.SaveAsync();
}
}
ts.Commit();
return(list);
}
}
}
/// <summary>申请任务分片</summary>
/// <param name="server">申请任务的服务端</param>
/// <param name="ip">申请任务的IP</param>
/// <param name="pid">申请任务的服务端进程ID</param>
/// <param name="count">要申请的任务个数</param>
/// <returns></returns>
public IList <JobLog> Acquire(String server, String ip, Int32 pid, Int32 count)
{
var list = new List <JobLog>();
if (!Enable)
{
return(list);
}
var step = Step;
if (step <= 0)
{
step = 30;
}
lock (this)
{
using (var ts = Meta.CreateTrans())
{
var start = Start;
for (var i = 0; i < count; i++)
{
if (!TrySplit(start, step, out var end))
{
break;
}
// 创建新的分片
var ti = new JobLog
{
AppID = AppID,
JobID = ID,
Start = start,
End = end,
Step = step,
BatchSize = BatchSize,
};
ti.Server = server;
ti.ProcessID = pid;
ti.Client = $"{ip}@{pid}";
ti.Status = JobStatus.就绪;
//根据数据任务设置的偏移量来计算任务项的偏移量
ti.Offset = Offset;
ti.CreateTime = DateTime.Now;
ti.UpdateTime = DateTime.Now;
ti.Insert();
// 更新任务
Start = end;
start = end;
list.Add(ti);
}
if (list.Count > 0)
{
// 任务需要ID，不能批量插入优化
//list.Insert(null);
UpdateTime = DateTime.Now;
Save();
ts.Commit();
}
return(list);
}
}
}
